DOCSLIB.ORG

Study of the Tool Path Generation Method of an Ultra-Precision Spherical Complex Surface Based on a Five-Axis Machine Tool Keywo

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Study of the Tool Path Generation Method of an Ultra-Precision Spherical Complex Surface Based on a Five-Axis Machine Tool Keywo Study of The Tool Path Generation Method of an Ultra-Precision Spherical Complex Surface Based on a Five-Axis Machine Tool Tianji Xing Harbin Institute of Technology Xuesen Zhao ( [email protected] ) Harbin Institute of Technology https://orcid.org/0000-0001-5460-0683 Zhipeng Cui Harbin Institute of Technology Rongkai Tan East China Jiaotong University Tao Sun Harbin Institute of Technology Research Article Keywords: Tool path generation method, Five-axis machining, Spherical complex surface, Ultra-precision, Milling Posted Date: February 10th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-167042/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Study of the Tool Path Generation Method of an Ultra-Precision Spherical Complex Surface Based on a Five-Axis Machine Tool Tianji Xing a, Xuesen Zhao a, *, Zhipeng Cui a, Rongkai Tan b, Tao Sun a a Center for Precision Engineering, Harbin Institute of Technology, Harbin, China b School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, China Keywords: Tool path generation method; Five-axis machining; Spherical complex surface; Ultra-precision; Milling Abstract The improvement of ultra-precision machining technology has significantly boosted the demand for the surface quality and surface accuracy of the workpieces to be machined. However, the geometric shapes of workpiece surfaces cannot be adequately manufactured with simple plane, cylindrical, or spherical surfaces because of their different applications in various fields. In this research, a method was proposed to generate tool paths for the machining of complex spherical surfaces based on an ultra-precise five-axis turning and milling machine with a C-Y-Z-X-B structure. Through the proposed tool path generation method, ultra-precise complex spherical surface machining was achieved. First, the complex spherical surface model was modeled and calculated, and then it was combined with the designed model to generate the tool path. Then the tool paths were generated with a numerically controlled (NC) program. Based on an ultra-precision three-coordinate measuring instrument and a white light interferometer, the machining accuracy of a workpiece surface was characterized, and t1he effectiveness of the provided tool path generation method was verified. The surface roughness of the machined workpiece was less than 90 * Corresponding Author. Email Address: [email protected] 1 nm. Furthermore, the surface roughness within the spherical region appeared to be less than 30 nm. The presented tool path generation method in this research produced ultra-precision spherical complex surfaces. The method could be applied to complex spherical surfaces with other characteristics. 1 Introduction Ultra-precision machining technology has been widely used in the biomedicine, aerospace, defense, and electronic communication technology industries [1]. Because of their different applications in various fields, the geometric shapes and surface morphologies of machined surfaces have become more complicated. Improving the surface shape accuracy and roughness of a machined workpiece is significant, because these factors have a great influence on the performance of a workpiece. A complex surface requires the use of high precision calculations and encompasses both functional and aesthetic effects; it is a combination of a curved surface formed by multiple curvatures [2-3]. Typical complex surfaces include aspheric surfaces, free-form surfaces, and special-shaped surfaces [4]. The machining of complex surfaces can be achieved by using three-axis turning machining. Representative turning machining methods include single point diamond turning (SPDT), fast tool servo (FTS) turning, and slow tool servo (STS) turning [5]. At present, SPDT is commonly used in the manufacturing of ultra-precision spherical and aspherical surfaces [6]. However, traditional SPDT cannot meet machining requirements because the curvature of the spherical surface is larger than the common optical curved surface [7-8]. FTS turning has the characteristics of a high motion frequency response, easy resonance, and a short stroke [9-11]. However, it is not suitable for machining spherical workpieces with a certain degree of rotation. STS turning is significantly affected by the inertia of a machine tool slide and the response speed of a motor, and the dynamic response speed of a machine tool is low, which 2 would not be suitable for the machining of a complex spherical surface [12,13]. Compared with turning, multi-axis milling is more suitable for the machining of spherical complex surfaces with millimeter-scale characteristics, such as pits and round chamfers [14,15]. Multi-axis milling requires more than three axes to work together. Each axis generally includes a linear axis and a rotary axis. The linear axis and the rotary axis work together to satisfy the requirements of machining spherical complex surfaces in different orientations [16,17]. However, due to the increase in the motion of the axes, the sources of error also increase. Therefore, it is necessary to ensure the accuracy of the important performance indicators of the machine tool and provide a stable processing environment [18,19]. Due to the above-mentioned reasons, the machining method employed in this research was based on ultra-precision turning combined with multi-axis milling. Multi-axis milling can be used to machine complex and high steepness surfaces [20,21]. Furthermore, the generation of tool paths plays an important part in complex surface machining. For workpieces with complex shapes, the key to tool path generation is determining how to solve interference processing. The generation of tool paths determines the actual movement paths and pose states in the computer numerical controlled (CNC) machining process. Additionally, for the same workpiece, using different tool path generation methods could thus cause obvious differences in the machining efficiency and accuracy. Numerous research studies have been conducted to solve the tool path generation problems. Yuan et al. [22] proposed a tool vibration path generation strategy based on the working principle of the double frequency vibration cutting method. Kong et al. [23] proposed the processing of composite free-form surfaces by combining the hybrid processing technology of a slow sliding servo and a fast tool servo. The 3 machining process for this hybrid tool servo was explained, and the tool path generation was presented. Koyama et al. [24] developed a computer aided manufacturing (CAM) system in ultra-precision micromachining to assist operators with settings. From the simulation result, it was found that the CAM system was effective in producing micro parts easily and accurately. Chen et al. [25,26] proposed a new method to model complex surfaces based on the recursive subdivision theory. This method could deal with a complex surface with an arbitrary topological structure that had initial mesh controls. It had a high calculation efficiency, the modeling results were ideal, the numerical control interpolation accuracy of the complex surface was very high, and its error was controllable. Huang et al. [27] and Chen et al. [28] generated tool paths from geometrical calculations considering lens designs, tool geometries, and roller parameters. Gao et al. [29] discussed the methodology for the development of the tool path generator for a progressive lens. Using the model of the freeform surface, which represents a double cubic B-spline surface, the method of changing parameters was used to calculate the numerically controlled (NC) machining tool path. Brecher et al. [30] presented the layout of a tool path calculation based on the Non-Uniform Rational B-Splines (NURBS) data format. In addition, the interfaces, the hardware, and the software for the realization of a NURBS based control unit for Fast Tool Servo turning and local corrective polishing operations were described. Software for generating complex curved tool paths is widely used, and popular programs include UG [31-33], PRO/E [34], and PowerMILL [35]. The main advantage of commercial software is that it can automatically generate tool paths flexibly according to the shape of a rough workpiece and a machining target. However, ultra-precision machining requires tool paths with step lengths, spacing, and feed rates with small sizes. When these commercial software programs are employed, they can be time-consuming 4 and difficult to use. Therefore, in this research, the use of programming software to design a complex spherical surface that needed to be processed was considered, and a small spacing was set for the tool path. In summary, it is necessary to study a method for generating the tool paths of spherical complex surfaces. In this research, a method was proposed for the generation of tool paths for the machining of complex spherical surfaces, and a golf-ball-like spherical surface served as a research model for the five-axis machining of complex curved surfaces. The reasons for this are as follows. First, such a method would be useful in fluid mechanics applications [36,37]. Second, it can generate representative spherical complex surfaces. In this research, the golf-like spherical surface machining was based on an ultra-precision five-axis turning and milling machine. 2 Machining objects and equipment 2.1 Machining objects We used a golf-ball-like spherical surface as the machining object. The main body of the
Load more

Recommended publications
  • Metal Drill Bits Hammer Drill Stronger Than Steel Chisel Drill Bits Stone and Special Metal Drill Bits
    BITS METAL DRILL BITS HAMMER DRILL STRONGER THAN STEEL CHISEL DRILL BITS STONE AND SPECIAL METAL DRILL BITS 307 | HSS-E DIN 338 cobalt 76–79 WOOD DRILL BITS 311 | HSS TIN DIN 338 steel drill bit 80–81 302 | HSS DIN 338, ground, split point 82–85 300 | HSS DIN 338, standard 86–90 300 | HSS DIN 338, standard, shank reduced 91 340 | HSS DIN 340, ground, split point, long 92 342 | HSS DIN 1869, ground, extra long 93 SAWS 344 | HSS hollow section drill bit / Facade drill bit 94 345 | HSS DIN 345 morse taper 95–96 303 | HSS DIN 1897 pilot drill bit, ground, split point, extra short 97 310 | HSS DIN 8037 carbide tipped 98 312 | HSS-G Speeder DIN 338 RN metal drill bit 99 304 | HSS Double end drill bit, ground, split point 100 315 | HSS Drill bit KEILBIT, ground 101 317 | HSS combination tool KEILBIT 102 329 | HSS countersink KEILBIT 103 327 | HSS countersink 90° DIN 335 C 104 328 | HSS deburring countersink 105 ASSORTMENTS 326 | HSS tube and sheet drill bit 106 325 | HSS step drill 107 140 | Scriber 108 320 | HSS hole saw bi-metal 109–112 SHELVES | From Pros for Pros | www.keil.eu | 73 MODULES - BITS HAMMER DRILL METAL DRILL BITS Nothing stops the metal drill bits because we offer a drill bit for every application. CHISEL HSS-E TWIST DRILL BIT 135° The HSS-E drill bit is a cobalt alloyed high performance drill bit. Even with insufficient cooling it has reserve in heat resistance. Due to the alloying addition of 5 % Co in the cutting material these drill bits can be used for working with work pieces with a tensile strength of over 800N/m².
    [Show full text]
  • Water Jet Cutting a Technology on the Rise
    Water Jet Cutting A Technology on the Rise Water Jet Cutting- A Technology on the Rise Foreword: Siberia to Iceland, from Norway to South The purpose of this brochure is to give the Africa. reader a rough overview of Waterjet Specially trained technicians are constantly Cutting. In addition to precise cutting of on duty and can help you immediately at various materials as presented, many any time. special applications i.e. medical and in the decommissioning and demolition field Service and wear parts are shipped within exist – these however being outside the 24 hours. scope of this text. For any additional Our contract-cutting department takes information, our KMT Waterjet team is care of our customers’ needs to the fullest, always available. Also, we would like to enabling us to perform test-cutting welcome you to visit our homepage procedures in order to optimize the www.kmt-waterjet.com, where you have cutting method, allowing you for the option of downloading useful files. economically and technically sound In order for you to get a better operation of your machines. understanding of KMT Waterjet Systems, The KMT Waterjet team in Bad Nauheim is we would also like to take this opportunity always available to answer your questions! to present our company. In the Autumn of 2003, KMT AB of Sweden purchased the Waterjet Cutting Division from Ingersoll-Rand. The KMT Corporation is an Internationally active corporation with over 700 employees worldwide. KMT Waterjet Systems employs 200 people. Further KMT brands include UVA, LIDKOPING, KMT Robotic Solutions, KMT Aqua-Dyne, KMT McCartney, and KMT H2O.
    [Show full text]
  • Portable Machine Tools Safety Precautions
    TC 9-524 Chapter 3 PORTABLE MACHINE TOOLS The portable machine tools identified and described in this Portable machine tools are powered by self-contained chapter are intended for use by maintenance personnel in a electric motors or compressed air (pneumatic) from an outside shop or field environment. These lightweight, transportable source. They are classified as either cutting took (straight and machine tools, can quickly and easily be moved to the angle hand drills, metal sawing machines, and metal cutting workplace to accomplish machining operations. The accuracy shears) or finishing tools (sanders, grinders, and polishers). of work performed by portable machine tools is dependent upon the user’s skill and experience. SAFETY PRECAUTIONS GENERAL Portable machine tools require special safety precautions Remove chuck keys from drills prior to use. while being used. These are in addition to those safety precautions described in Chapter 1. Hold tools firmly and maintain good balance. Secure the work in a holding device, not in your PNEUMATIC AND ELECTRIC TOOL hands. SAFETY Wear eye protection while operating these Here are some safety precautions to follow: machines. Never use electric equipment (such as drills, Ensure that all lock buttons or switches are off sanders, and saws) in wet or damp conditions. before plugging the machine tool into the power source. Properly ground all electric tools prior to use. Never leave a portable pneumatic hammer with a Do not use electric tools near flammable liquids or chisel, star drill, rivet set, or other tool in its nozzle. gases. ELECTRIC EXTENSION CORDS Inspect all pneumatic hose lines and connections prior to use.
    [Show full text]
  • Hollow Chisel Mortiser
    User Manual Read and understand this manual before using machine. HOLLOW CHISEL MORTISER Model Number 25200 ® CUS STEEL CITY TOOL WORKS Manual Part No. OR71593 VER. 2.07 THANK YOU for purchasing your new Steel City Hollow Chisel Mortiser. This mortiser has been designed, tested, and inspected with you, the customer, in mind. When properly assembled, used and maintained, your mortiser will provide you with years of trouble free service, which is why it is backed by one of the longest machinery warranties in the business. This mortiser is just one of many products in the Steel City’s family of woodworking machinery and is proof of our commitment to total customer satisfaction. At Steel City we continue to strive for excellence each and every day and value the opinion of you, our customer. For comments about your mortiser or Steel City Tool Works, please visit our web site at www.steelcitytoolworks.com . 2 TABLE OF CONTENTS INTRODUCTION SECTION 1 Warranty .................................................................................................................................................4 SECTION 2 Product Specifications ............................................................................................................................7 SECTION 3 Accessories and Attachments ................................................................................................................7 SECTION 4 Definition of Terms..................................................................................................................................7
    [Show full text]
  • Study Unit Toolholding Systems You’Ve Studied the Process of Machining and the Various Types of Machine Tools That Are Used in Manufacturing
    Study Unit Toolholding Systems You’ve studied the process of machining and the various types of machine tools that are used in manufacturing. In this unit, you’ll take a closer look at the interface between the machine tools and the work piece: the toolholder and cutting tool. In today’s modern manufacturing environ ment, many sophisti- Preview Preview cated machine tools are available, including manual control and computer numerical control, or CNC, machines with spe- cial accessories to aid high-speed machining. Many of these new machine tools are very expensive and have the ability to machine quickly and precisely. However, if a careless deci- sion is made regarding a cutting tool and its toolholder, poor product quality will result no matter how sophisticated the machine. In this unit, you’ll learn some of the fundamental characteristics that most toolholders have in common, and what information is needed to select the proper toolholder. When you complete this study unit, you’ll be able to • Understand the fundamental characteristics of toolhold- ers used in various machine tools • Describe how a toolholder affects the quality of the machining operation • Interpret national standards for tool and toolholder iden- tification systems • Recognize the differences in toolholder tapers and the proper applications for each type of taper • Explain the effects of toolholder concentricity and imbalance • Access information from manufacturers about toolholder selection Remember to regularly check “My Courses” on your student homepage. Your instructor
    [Show full text]
  • FEIN METAL CORE DRILLING User-Oriented Solutions from the Specialist
    FEIN METAL CORE DRILLING User-oriented solutions from the specialist FEIN • SLUGGER Core Drilling Units Hand-Held Core Drill FEIN System Expertise Quickin System Tappers HSS Annular Cutters Carbide Cutters Accessories CONTENTS Table Of Contents General Core Drilling Units Cutters & Accessories Additional Core Drill Overview 4 KBM 32 Q 6 KBM Accessories 9 FEIN Tappers 14 KBM Premium Line 5 KBM 50 QX 7 KBM QUICKIN Cutters 11 FEIN Product Line 31 KBB Standard Line 15 KBM 52 U 6 KBH Hand-held 12 KBM 80 AUTO 7 Slugger Cutters 19 FEIN Warranty 32 Why FEIN QUICKIN? 11 HSS Nova 20 KBB 30 16 Slugger Cutter Line 19 HSS Dura TiN 22 KBB 38 16 HM Ultra Carbide 23 FEIN System Expertise KBB 40 17 Tap Size 24 “FEINOLOGY” 3 KBB 60 17 Sheet Metal 26 Slugger Accessories 25 FEIN Brand 3 KBH 25 12 Industrial Arbors 28 FEIN Mobile Training 32 ShortSluggers 30 FEIN KBM Premium Series: Core drilling system with high quality standards for versatile applications and optimum speed for carbide cutters. FEIN KBB Standard Series: Ideal for workshop and installation jobs. Reliable and economical with optimum speed for HSS annular cutters. FEIN KBH Hand-held: Drilling reinvented with the world’s first hand-held metal core drilling system. FEIN SYSTEM EXPERTISE Profit from FEIN system expertise. No other power tool manufacturer offers you as much experience in the core drilling field. FEIN knowledge has been built up over decades, and built into every aspect of FEIN core drilling. Introducing FEIN offers you a core drilling system for metal in which machine, core bits, and accessories are precisely matched to each other.
    [Show full text]
  • Ultra-Tool Speeds & Feeds Technical & Application Information
    Tech Flyer v2020.1 High-Performance Solid Carbide Round Tools Technical & Application Information ® American Made PERFORMANCE American Designed SERIES American Owned 2 rev2020.1 e v o l v e • • r e SOLID e v CARBIDE s l o o l v v n e i 19 T E A M 72 HUNTINGTON American Made BEACH American Designed American Owned Creating Value through Efficiency by utilizing progressive Quality, Manufacturing, Human Resource & Technological applications. SmoothFlute Patented Variable Helix design for robust stability in deep axial cuts SmoothGrind SmoothCoat Polished cutting surfaces Sputter-based SuperNitride for extreme sharpness PVD coating for superior surface and lubricity hardness & uniformity SmoothC ntricity Precision grinding, tool holding, SmoothEdge and tolerances for minimized TIR Surface and edge preparation for lubricity and minimized tool break-in -Grain® Laser etching for permanent ® ntilate. The World’s finest, purest toolVe identification sub-micron tungsten carbide powders Designed & Manufactured in the USA • ultra-tool.com ar safety glasses. Read MSDS. We r. of California to cause cancer (Proposition 65). RNING: Grinding causes hazardous dust. ols may shatte This product contains a chemical known to the State To WA Tight tolerance shanks with superior roundness are shrink-fit ready . e . Sales offices in ® ntilate Ve Florida & California Process control ID# on Designed & Manufactured in the USA • ultra-tool.com Made in the USA for 45 years ar safety glasses. Read MSDS. We product label ensures r. Performance Guaranteed total traceability
    [Show full text]
  • Cutting Data Recommendations
    CUTTING DATA RECOMMENDATIONS Uddeholm Corrax Machining data are always dependent on the actual operation, the machine tool and the cutting data used. The machining data given is this datasheet are general guidelines that may have to be adjusted to the actual conditions of a specific machining operation. Cutting data formulae Turning Legend π ⋅ Dn⋅ vc = Cutting speed (m/min) Cutting speed,() v = m /min c 1000 n = Spindle speed (rev/min) f = Feed per rev (mm/rev) 1000⋅ vc Spindle speed,() n = rev / min ap = Axial depth of cut (mm) π ⋅ D D = Workpiece diameter (mm) 3 Q = Material removal rate (cm3/min) Material removal rate,() Q=⋅ vcp⋅ a f cm / min Ra = Surface roughness (μm) 2 f ⋅50 re = Nose radius (mm) Surface roughness,() Ra ≈ μ m rε Milling Legend π ⋅ D ⋅ n v = Cutting speed (m/min) v = (m/min ) c c 1000 n = Spindle speed (rev/min) v = Feed speed (mm/min) 1000 ⋅ vc f n = ( rev/min) ap = Axial depth of cut (mm) π ⋅ D ae = Radial depth of cut (mm) f = Feed per rev (mm/rev) vf = fz ⋅ z ⋅ n= f ⋅ n(mm/min ) z = Number of teeth fz = Feed per tooth (mm/tooth) ae ae D = Cutter diameter (mm) hm = fz ⋅ (mm ) < 0,3 D D hm = Average chip thickness (mm) Q = Material removal rate (cm3/min) ap ⋅ ae ⋅ vf Q = (cm3/min) 1000 Drilling π ⋅ Dn⋅ Legend Cutting speed,() vc = m /min 1000 vc = Cutting speed (m/min) n = Spindle speed (rev/min) 1000⋅ vc Spindle speed,() n = rev / min vf = Feed speed (mm/min) π ⋅ D D = Drill diameter (mm) f = Feed per rev (mm/rev) Feed speed,() vf =⋅ f n mm / min vf Feed per rev,() f = mm / rev n Turning Uddeholm Corrax Turning Cemented carbide HSS Roughing Finishing Cutting speed, vc (m/min) 110-160 160-210 13-18 Feed, f (mm/rev) 0,2-0,4 0,05-0,2 0,05-0,3 Depth of cut, ap (mm) 2-4 0,5-2 0,5-3 Suitable grades P20-P30 coated carbide P10 coated carbide or cermet Remarks: 1.
    [Show full text]
  • Machine Tool Technology 1
    Machine Tool Technology 1 • Machine Tool Technology (Certificate of Achievement) (https:// MACHINE TOOL TECHNOLOGY catalog.napavalley.edu/areas-of-study/machine-tool-technology/ machine-tool-technology-certificate-of-achievement/) Department Courses NVC’s Machine Tool Technology Program can give you the training • Machine Tool Technology (MACH) (https://catalog.napavalley.edu/ needed to set up and operate conventional machine tools and modern courses/mach/) machining and turning centers. The program provides experience in using computers to program modern computer numerical controlled (CNC) machines. Your coursework will include classes in setting up and operating basic machine tools, such as lathes, milling machines, drill presses, surface grinders, and CNC machines. Preparation also covers precision measuring skills, blueprint reading, cutting tool design, machine tool operation, and fundamentals of welding, drafting, shop math, photography, and physics. Career Opportunities The program can prepare you for a variety of machine tool careers including, but not limited to: • CNC operator, using CNC machinery to produce metal or plastic parts • CNC programmer, setting up and programming CNC machines • Apprentice, serving four years to become a journeyman • Journeyman machinist, reading and interpreting blueprints and specification and operating all machine tools to construct and repair metal parts • Tool and die maker, using the highest degree of skill in the machinist’s art • Automotive machinist • Moldmaker for the plastics industry • Winery
    [Show full text]
  • DEEP HOLEMAKING TOOLS Providing Complete Tooling Solutions for Metal Removal and Industrial Products
    DEEP HOLEMAKING TOOLS Providing Complete Tooling Solutions for Metal Removal and Industrial Products Tungaloy is one of the world’s leading manufacturers of carbide cutting tools. Nearly 80 years of experience in the engineering of cutting tools are reflected in their production program. The company produces products from carbide, cubic boron nitride (CBN), polycrystalline diamond (PCBN), ceramics and cermets of the highest quality and performance. Tungaloy’s innovative R & D department continually strives to create new products for highly efficient and economic machining applications for the production needs of the 21st century. They offer a wide range of turning, milling and drilling products of highest quality, always devoted to new technologies and customer demands. 2 3 Brazed Special Reamers Tungaloy has a wide range of solutions for tailor made reamers, carbide or cermet brazed inserts. Range Ø6-220 mm 4 Brazed Combined Reamers Reamers combined with drills carrying carbide or cermet inserts. Range up to Ø250 mm 5 Solid Carbide Special Reamers Designed with or without coolant holes, coated or uncoated, straight or helical. Range Ø3-60 mm 6 Brazed Counter Bores Counter bores are common in the hydraulic engines and SAE counter bore is available from Tungaloy. 7 Solid Carbide Milling Cutters For finishing with special shape, cylindrical, tapered, stepped, coated or uncoated. Range Ø3-60 mm 8 Brazed Milling Cutters Flat or spiral carbide tips brazed on a steel body. Very popular in the aerospace industry, especially for its exotic materials applications. Range up to Ø200 mm 9 Extra Long Drills Dedicated design of extra long drills. Range: Ø5 and up Length up to 330 mm 10 Solid Carbide Drills All kinds of drilling application solutions.
    [Show full text]
  • Helical's Machining Guidebook
    Helical MACHINING GUIDEBOOK Quick Reference eBook for CNC Milling Practices & Techniques 1 | Machining Guidebook | © 2016 Helical Solutions, LLC Helical Contents Milling Techniques & Strategies Terminology & Common Calculations 01 | Milling Techniques . 3 04 | End Mill Construction . 37 Types of Tool Entry . 4 Geometry Definitions . 38 Ramping . 6 End Mill Construction . 40 Thin Wall Milling . 8 End Mill Anatomy . 42 Deep Pocket Milling . 10 05 | Common Calculations . 51 Finishing . 11 Decimal Conversion Chart . 52 Ball Nose Strategy . 13 Common Milling Calculations . 53 Corner Engagement . 17 Speeds & Feeds . 54 Angle Engagement . 19 Conventional vs Climb Milling . 20 06 | Tool Holding . 55 Chip Thinning . 22 Tool Holding . 56 Preventing Tool Pull Out . 58 02 | High Efficiency Milling . 23 High Efficiency Milling . 24 HEM Tooling . 25 Troubleshooting 03 | Depth of Cut . 26 07 | Troubleshooting . 60 Depth of Cut . 27 Troubleshooting Chart . 61 Depth of Cut - Peripheral . 28 Tool Wear . 65 Depth of Cut - Slotting . 34 Tool Deflection . 69 Copyright © 2016 by Helical Solutions, LLC . All rights reserved . This book or any portion thereof may not be reproduced or used in any manner whatsoever without the express written permission of Helical Solutions . 2 | Machining Guidebook | © 2016 Helical Solutions, LLC Helical 01 Milling Techniques Types of Tool Entry . 4 Ball Nose Strategy . 13 Ramping . 6 Corner Engagement . 17 Thin Wall Milling . 8 Angle Engagement . 19 Deep Pocket Milling . 10 Conventional vs Climb Milling . 20 Finishing . 11 Chip Thinning . 22 3 | Machining Guidebook | © 2016 Helical Solutions, LLC Helical Types of Tool Entry The type of part entry that is programmed has a lot of influence on the tool’s success and is one of the most punishing Theoperations type of part for entry a cutter programmed .
    [Show full text]
  • Machine Tool Operations
    2425 Hwy. 75 • P.O. Box 246 Blountville, Tennessee 37617-0246 800.836.7822 (Admissions and Records) Fax 423.323.0215 www.NortheastState.edu Division of Technologies 2020-2021 Machine Tool Operations A Technical Certificate Program PROGRAM DESCRIPTION The Machine Tool Operations certificate program prepares individuals as machinists capable of reading blueprints and operating precision measuring instruments, metal turning lathes, milling machines, and computer numerical control (CNC) equipment. TYPICAL PROGRAM OF STUDY PROGRAM ARTICULATION Course No. Course Title Credit FALL All courses in the Machine Tool Operations certificate INTC 1010 Quality and Inspection 3 MATH 1050 Trigonometric Applications 4 program will articulate into the Associate of Applied MATT 1110 Machine Tool Operations I 4 Science degree program in Industrial Technology - MATT 1510 Blueprint Reading for the Machine Trades 3 Concentration: Machine Tool. SPRING INTC 1020 Safety in the Workplace 3 MATT 1120 Machine Tool Operations II 4 The Machine Tool Operations certificate is accredited by the MFGT 2310 CNC Programming I 3 National Institute for Metalworking Skills, Inc., (NIMS). FALL MATT 2130 Machine Tool Operations III 4 10565 Fairfax Boulevard, Suite 10 MFGT 2320 CNC Machine Operations I 3 Fairfax, VA 22030 Total Credit Hours 31 Telephone: 703.352.4971 Students must complete all learning support deficiencies in English and MATH APPLICATION PROCEDURE 0050, or have appropriate entrance scores. A student desiring to pursue a certificate in Machine Tool Operations must: GAINFUL EMPLOYMENT DISCLOSURE 1. Submit the Northeast State Application for As required by the U.S. Department of Education Admission to the Office of Admissions and https://apps.northeaststate.edu/ Records.
    [Show full text]